47 search results - page 5 / 10 » Dictionary Optimization for Block-Sparse Representations |
CISS
2008
IEEE
14 years 9 months ago
2008
IEEE
Currently, there is no quantitative way to ascertain how an overcomplete signal representation describes a signal and its features using terms drawn from a dictionary. Though spars...
CORR
2011
Springer
14 years 1 months ago
2011
Springer
The richness of natural images makes the quest for optimal representations in image processing and computer vision challenging. The latter observation has not prevented the design...
ICASSP
2010
IEEE
14 years 9 months ago
2010
IEEE
We propose an ℓ1 criterion for dictionary learning for sparse signal representation. Instead of directly searching for the dictionary vectors, our dictionary learning approach i...
CVPR
2008
IEEE
14 years 9 months ago
2008
IEEE
We propose a joint representation and classification framework that achieves the dual goal of finding the most discriminative sparse overcomplete encoding and optimal classifier p...
97
Voted
CVPR
2010
IEEE
15 years 23 days ago
2010
IEEE
In a sparse-representation-based face recognition scheme, the desired dictionary should have good representational power (i.e., being able to span the subspace of all faces) while...